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DRAFT COUNTY PROFILE (DATA) ELEMENT APPENDIX associated variable. The equation coefficients were derived by least squares regression, using series indicator and population values for 1990 and 2000. The results of this equation were adjusted for the extra 1/4 year of the estimate period by linearly expanding the change in y from the assumed 2000 value of 1.0. The nongroup quarters 0 -64 population estimate derived from this equation was combined with independent estimates of the population of military barracks, college dormitories, and other institutions to yield the estimate of the total 0 -64 population. The state estimate for 2005 was the adjusted one mentioned above. Subtraction of the sum of the county populations 65 and older from this estimate produced a control for the 0 -64 population estimates. There was no state control for the population 65 and older. Methodology --- Age, Race, and Sex Detail To calculate the populations for the different age, race, and sex groups, I used a relatively simple process. First, projections were made for each county by 384 age, race, and sex cells (96 age values: 0,1,2,...,94, and 95 +; white /other; male /female) to April 1, 2010. Then, these values were interpolated (age cohort interpolation for non - institutional populations; age group interpolation for institutional populations) to July 1, 2005 using the April 1, 2000 Census values as a base. Next, the 384 cells for each county were proportionately adjusted to sum to the county total population. Finally, the appropriate age cells were summed to form each group. , Last Update • September S 2006 NC Office of Budget Management and Planning, Demographics Section . SECTION 133: Housing Median Contract Rent: Contract rent is the monthly rent agreed to, or contracted for, regardless of any furnishings, utilities, or services that may be included. Contract rent is tabulated for "specified renter - occupied" units, which exclude one - family houses on 10 acres or more. Median is the middle value, so that half of all renter - occupied units paid more monthly rent and half paid less. SECTION 84: Employment And Economy Definitions from the US Census Bureau as prepared by the NC ZINC Database Per Capita Income by Place of Residence The total personal income of residents of an area divided by the resident population of the area. Median Family Income Family income consists of total money income received in the calendar year by all family members 15 years old and over (14 in 1970), tabulated for all families. Mean Family Income Average income of all families, including those with no income or loss, in the prior calendar year. Regional totals and other geographic aggregations are not available for this variable. Median Household Income 3 8/16/2007